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hwmon: (lm75) Add support for TMP75B

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The TMP75B has a different control register, supports 12-bit
resolution and the default conversion rate is 37 Hz.

Signed-off-by: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Iker Perez del Palomar Sustatxa 2019-05-03 17:15:00 +01:00 committed by Guenter Roeck
parent be889be778
commit 39abe9d88b
2 changed files with 15 additions and 2 deletions
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6
Documentation/hwmon/lm75.rst
View File

@ -93,9 +93,9 @@ Supported chips:
https://www.st.com/resource/en/datasheet/stlm75.pdf
* Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75C, TMP175, TMP275
* Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75B, TMP75C, TMP175, TMP275
Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp75c', 'tmp275'
Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp75b', 'tmp75c', 'tmp275'
Addresses scanned: none
@ -111,6 +111,8 @@ Supported chips:
http://www.ti.com/product/tmp75
http://www.ti.com/product/tmp75b
http://www.ti.com/product/tmp75c
http://www.ti.com/product/tmp175

11
drivers/hwmon/lm75.c
View File

@ -59,6 +59,7 @@ enum lm75_type { /* keep sorted in alphabetical order */
tmp175,
tmp275,
tmp75,
tmp75b,
tmp75c,
};
@ -354,6 +355,11 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
data->resolution = 12;
data->sample_time = MSEC_PER_SEC / 2;
break;
case tmp75b: /* not one-shot mode, Conversion rate 37Hz */
clr_mask |= 1 << 15 | 0x3 << 13;
data->resolution = 12;
data->sample_time = MSEC_PER_SEC / 37;
break;
case tmp75c:
clr_mask |= 1 << 5; /* not one-shot mode */
data->resolution = 12;
@ -414,6 +420,7 @@ static const struct i2c_device_id lm75_ids[] = {
{ "tmp175", tmp175, },
{ "tmp275", tmp275, },
{ "tmp75", tmp75, },
{ "tmp75b", tmp75b, },
{ "tmp75c", tmp75c, },
{ /* LIST END */ }
};
@ -512,6 +519,10 @@ static const struct of_device_id __maybe_unused lm75_of_match[] = {
.compatible = "ti,tmp75",
.data = (void *)tmp75
},
{
.compatible = "ti,tmp75b",
.data = (void *)tmp75b
},
{
.compatible = "ti,tmp75c",
.data = (void *)tmp75c